Shock absorber



Dec. 4 1923. 1,476,609

R. H. HASSLER SSSSSSSSSSSS ER JIM' il 'l uw 11mm im H /A/VENTO/Q Eobef H. HassZeJ "Dec, 4, 1923.,Y

R. H. HASSLER SHOCK ABSORBER Filed May 25, 1922 2 Sheets-Sheet 2 retenir essayes@ EBERT H. EASSLER, 01E NDEANAPOLS, INDANA.

SHOCK ABSURBER.

Application :Glied May 25, 192%.' Serial No. tl. I

To @ZZ 'whom it may concern: occupying an operative position. Fig. i?.

Be it known that Il, ROBERT H. Hessian, is a plan View of the friction device also e a citizen of the United States, residing at shown .in operative position. Fig. 3 is a indianapolis, in the county of Marion and horizontal section on the line 3-3 in F ig. si

State of indiana, have invented certain new\l. Fig. i is a fragmentary cross section of and useful improvements in Shock Absorbers, of which the following is a specification.

My invention relates to that class of shock absorbing devices in which friction is employed to restrain and dampen the natural oscillatory movements of the vehicle springs;

and one of the objects of the invention is to provide simple and practical improvements in friction shock absorbers whereby high eihciency is attained, construction 1s simpliiied and unusual compactness of design is secured without a multiplicity of parts to wear loose and rattle. A

A further and very important object of the invention is to provide an enclosed construction whereby all forms of road dirt and other foreign matter are eliectually. excluded from the internal parts of the device. A still further object of the invention consists in the provision of means for setting up and maintaining a predetermined friction pressure between the moving parts of the device, this pressure being properly adjusted when the device is assembled.

The enclosed construction is of a fool proof nature and prevents any tampering with the correct predetermined friction pressure.

Still another advantage lies in the fact that the heat incident -to the friction is generated in a manner to be most readily and eiliciently dissipated. With other forms of friction shock absorbers the parts operate in such a manner that some or all of the heat is generated on the inner surfaces where the parts are more or less inaccessible to air cooling. ln the present device, however, provision is made so that the heat generated by the friction will'be immediately inside the outer walls where it iS most readily disl sipated.

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The distinguishing features of my invention will be further elucidated and the important structural elements characterizing the practical embodiment which is illustrated as an example, will be more particularly explained in the specifications described hereinafter to be given, in which Y Figure l is a side elevation of my improved friction shock absorber shown as the device on the line 4 4 in Fig. 3 showing some of the working parts therein. Fig. 5 is a view of the center support or hub member, shown in elevation, with a frag- @5 vment broken away and shown in section.

Fig. 6 is a plan view of the outer friction disk container. Fig. 7 is a side view thereof with a fragment in section taken on line 7-p-7 in Fig. 6. Fig. 8 is an elevation of the 7@ compression View thereof.

Referring to the drawings, the shock absorber embodying my invention is shown as spring, and Fig. 9 is a plan applied to an automobile, 1 designating a portion of the frame element thereof, and 2 a frame bracket secured to the frame by a bolt 3. The shock absorber is pivotally mounted on the frame bracket by bolt 1i.

rlhe center support or hub member 15 of the shock absorber contains a anged portion or disk container 1,5, from the outer periphery of which project a plurality of out-turnedlips or keys 15", and the spaces between these lips form a plurality of te.

grooves 15C. This hub member also contains at the Vbase of the ange an annular recess or groove 15f. 17 is a cylindrical bush pressed, into the center opening of the hub member 15 forming a journal or bear- 90 ing. Into disk container 15a is pressed and securely held the friction disk 19. Disk 19 is non-rotatable in relation to its containerl 15a. 11 is a second disk container or flange containing on its periphery a plu- 96 ralityvof lips or keys 11a. These keys 11 lit loosely into the spaces 15c so that the two containers can move axially with relation to one another, but are locked circumferentially with relation to one another. me

9 is a second friction disk securely pressed into container 11 and held so as to be nonrotatable therein by the lips 11b. Interposed 'between container 15a and container 11 is an annular spring 13 in a condition of com- MP5 and forming a pivot bearing' therein. 25 is il@ an actuator arm formed integral with the oscillating member 5 and connected -to the opposing vehicle member through a suitable mechanical connection that will set up oscillations when the frame and axle ele` ments of the vehicle approach or separate. 23 is a hollen7 cup-shaped cover securely held in lthe oscillating member by being tightly pressed in. 21 is anannular felt Washer lying in the groove t of lthe hub member 15, this groove being formed between the base of the disk container 15a and the small hub flange 15. j

The operation of the parts will now be described. Spring 13 sets up .a -central internal pressure transmitted through the containers 15a and 11 to the friction disks v19 and 9 respectively. l"lhe friction disks 191;v and 9 bear against the inner annular sur,-4 faces of 23 and 5 respectively and thus set.:`

u frictional resistance or damping efl'ectto a their containers, but are forced to slide upon vthe inner surfaces of the outer casing only.

keep down the temperature of the device when it is t.worked hard. Parts 5 and 23, when assembled about the disk, form a protecting casing which is almost complete with the exception of the space in the inside diameter of part 23. This space is filled by the supporting` hub member 15 with itsy hub flange l5l and felt washer 21. By making the flange 15d almost as large in diameter as the inner diameter of cover 23, the felt washer itself can be protected from mechanical damage and is inaccessible to road dirt, water and other foreign matter except through the small opening left between the outside of flange 15d and the inside of cover 23. The fact thatvthis one opening or circular joint is of small diameter in relation to the total size of the device is'a big advantage as compared to any. construction where the crevice or joint is of large diameter near the outer periphery of the device.

Cover 23 is of course pressed into member 5 when the device is `assembled under a much heavier pressure than that'exerted by the compression spring 13, so that the two halves of the casing will at all times stay together in the position into which they have been pressed. This construction also affords a smooth neat exterior of the casing.

After the device is assembled in manufacture, no adjustments of the friction are possible from the outside as the compression l spring is inaccessible. A very efficient spring 'pressure is obtained-by using the flat annular spring 13, more clearly illustrated in Figs. 8 and 9 of the drawings, by placing it between the disks 9 and 19, the spring being oscillations. rlhe disks cannot slidelin nal-rence The entrance of water and dirt to the fricabsorbers, .and this fault is reducedv to a minimum b lmy improved form of casing which isa most complete and continuous around the working parts except for the on joint which is of small diameter.

It is obvious that many modifications and changes may be made in my invention without departing from the spirit thereof, and I do not mean to limit m self to the exact construction shown .and escribed.

What I claim and desire to secure by Letters Patent is- 1. A shock absorber for vehicle springs comprising in combination, a casing, friction discs disposed within the casing in oscillatory fric-tional relation therewith, a hub member concentric with the axis of oscillatory movement andprojecting through one side ofthe casing, means for rigidly -connecting the friction discs with said hub member, means for ri idly connecting the hub externally to a ve icle frame element, andan actuator arm rigidly connected to said casing.

2. A shock absorber for vehicle springs comprising in combination, a casing, friction discs disposed within the casing in ose cillatory frictional relation therewith, a hub member concentric with the axis of oscillatory movement and projecting through one side of the casing, means for rigidly connecting the friction discs with said hub member, means for rigidly connecting the and an actuator arm integral with said casing.

3. A shock absorber for vehicle springs comprising in combination, a casing, friction discs disposed within the casing in oscillatory frictional relation therewith, an exelement, and an actuator arm rigidly connected to said casing.

4.-. A shock absorber for vehicle springs comprislng in combination, a casing, friction hub externally toa vehicle frame element,

l first mentioned hub member, W

' formed on the caslA caracte discs disposed' within thecasing in oscillatory frictional relation therewith, a hub member concentric with the axis of oscillatory movement and projecting through one side of the casin a second hub member formed on the caslng and matin with said first mentioned hub member, w ereby said hub members mutually support and guide one another, means for rigidly connecting the first mentioned hub member internally with the frictiondiscs, and means for producing relative oscillator movement between said casing and sai first mentiond hub member.

5. A shock absorber for vehicle springs comprising in combination, a casing, friction discs disposed within lthe casing 1n oscilla'- tory fric-tional relation therewith, a hub member concentric with the axis of oscillatory movement and projectin through one side of the casi a secon hub member carried by the caslng and mati with said reby said hub members mutually support and guide one another, means for rigidly connecting ,the first mentioned hub member internall with the friction'discs and externally wit the vehicle frame element, and an actuator arm rigidly connected to said casing.

6. A shock absorber for vehicle springs comprising in combination, a casing, friction discs disposed within the casing 1n oscilla.- tory rictional relation therewith, a hub member concentric with the axis or oscillatory movement and projecting through one side of of the casing, a secon hub member and mating within said first mentioned ub member, whereby said hub members mutually support and guide one another, means for rigldly connecting the first mentioned hub member internal y with the friction discs, and means for producing relative oscillatory movement between said casing and said first mentioned hub member.

7. A shock absorber for vehicle springs comprising in combination, a casing, friction discs disposed within the casing in oscillatory frictional relation therewith, a hub member concentric with the axis of oscillatory movement and projecting through one side of the casing, a flange carried by said hub member and provided with means for non-rotatively holding one ofsaid friction discs, a floating disc container provided withA means for non-rotativel holding another friction disc, means for locking said flange and said floating disc container together with respect to rotative movement, and means for producing relative oscillatory movement between the casing and the hub member.

8. A shock absorber for vehicle springs comprising in combination, a casing, friction discs disposed within the casing in oscillatory frictional relation therewith, a hub member concentric with the axis of oscillatory movement and projecting through oneside of the casin a flange carried by said hub member an rovided with means for non-rotatively holding one'of' said friction discs, a floating disc container rovided with means for non-rotatively ho ding another friction disc, compression springs between said flange and said floatin disc container, interengaging members carried b the flange and containerrespectively for ocking the flange and container to oscillatory movement tive axial movement of said flange and .container.

In witness whereof-I have hereunto set my hand and seal at Indianapolis, Indiana,

together with respect ut permitting relai this 18th day of May, A. D., one thousand v nine hundred and twenty-two.

.ROBERT H. HASSLER. [a a] 

